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Old 12th April 2012
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Ian Ian is offline
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Re: Four Thirds Lenses v Micro Four Thirds

Originally Posted by Bikie John View Post
Mostly Nick has it spot on. However I have to disagree with this bit, at least for sport/action and some nature (birds and stuff) - this is where we need fast long lenses. There are no equivalents (yet) in m43 and there are significant compromises - as Nick mentions - in using the lovely fast big43 lenses with an adapter.

Ciao ... John
The m.Zuiko 75-300 is not very fast, but it is a high quality lens and focuses very effectively. I have tried oncoming car continuous shooting (L mode - 4fps) with C-AF + Tracking on using the E-M5 with mixed results - it works well up to a certain distance when the relative motion of the car gets too much.

The Panasonic 100-300 is also a very good performer - not much to choose in image quality and it is slightly faster and cheaper.

In general, there is a compromise, optically, when making lenses smaller. Some of that compromise is balanced out by the fact that the Micro Four Thirds Flange-Back distance is shorter, especially for wide angle lenses. Panasonic seems to favour designing lenses that exhibit more geometric distortion and CA, but very good sharpness and contrast and then correcting distortion and CA in-camera (although only for JPEGs).

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